Temperature regulator for blowers



June 9, 1925.

Filed May 21 I. v my a Patented June 9, 1925.

UNITED STATES PATENT 0FFICE.

IRA I-I. sPENCnn, OFWEST HARTFOR-D, CONNECTICUT, ASSIGNOR TO THE SPENCER TURBINE COMPA Y, or wnsr nan'rronn, CoNNncrICUr, a CORPORATION OF CONNECTICUT.

TEMPERATURE REGULATOR FOR ."BLOWERS.

Application filed May 21,

To all whom it may come m:

Be it known that I, IRA H. SPENCER, a citizen of the United States, residing in 'lVest Hartford, in the county of Hartford and State of Connecticut, have invented a new and Improved Temperature Regulator for Blowers, of which the following is a specification.

My invention relates to the class of devices employed to prevent overheating of the air supplied by blowers for various purposes, and especially for the operation of musical instruments, and an object of my invention, among others, is to provide a device of this class'that shall be simple in construction and that will effectively accomplish its purpose. g

One form of device embodying my inven tion and in the construction and use of which the objects herein set out, as well as others, may be attained, is illustrated in the accompanying drawings, in which Figure lis-a View in side elevation of a blower having my improved regulator attached thereto,

FigureQ is a view in end elevation ot-the same with parts broken away to show construction. I r I Figure 3 is a detail view, scale enlarged, illustrating the CO11St1L1Cl3lO110f the temperature actuating device for controlling one of the valves. I I

Figure 4 is a detail view illustrating the construction of thepressure operating device for controlling another of the valves.

In the operation of blowers, for supplying air for various purposes, the conditions are such as to generate more or less heat de pending upon the amount of pressure, the greater the pressure the greater the heat, and the temperature often rises so high as to be injurious todevices to which the air is supplied. This-is especially true in the operation of multi-stage fan blowers employed for supplying air to musical instrunients, and while my invention is not limited to a blower for any special purpose,

yet as it finds ready adaption in connection with that type of blowers above mentioned employed for the purpose stated, I have selected such a'blower for the purpose of illustrating my invention in the drawings torming a part of this application, in which drawings the numeral-5 indicates a case of 1919 Serial 'No. 298 ,674.

a blower ot' the multi-stage type, the series of tans notbeing specifically illustrated but the arrangement of which is well understood by those skilled in the art. These fans are mounted upon a shaft 6 rotatedas by means of a motor 7. Said case has an inlet opening 8 at one end and an outlet pipe 9 extending from an outlet opening at the end of the case opposite said inlet. It will be 1mderstood that the pipe 9 extends toorcommunicates with apassage leading to the musical instrument or other device that is supplied with air, which air may be retained in a reservoir or other suitable receptacle or otherwise disposed of in connection with the instrument in any well known n'ian'ner.

In order to prevent the heating of the air to an objectionable extent, as hereinbefore referred to, I provide means for saturating the air with moisture, as with water, supplied at the inlet end ofthe case, the water being introduced in the form of a spray from a nozzle 10 at the end ot'a water pipe 11 leading from any suitable source of sup ply and having a manually operated valve 12 by means of which the water or other liquid maybe effectually shut off. As a means for automatically controlling the supply of water or other liquid to regulate the temperature of the air, I provide a temperature regulated valve 13 of any suitable construction, the specific arrangement 0t such valve being omitted herein but which.

valve will be of any suitable well known type embodying a plunger 14 for its operation. A stem 15 of an expansible valve ac tuator 16 is operatively connected with tl a plunger 14, in the structure herein shown the ends of the plunger and stem abutting one against the other. The actuator herein shown is of the bellows type, a tube 17 leading thereto from a thermostat 18 located in the outlet pipe 9. This thermostat may be of any desired construction, the form herein shown comprising a shell filled with any suitable" material responding'to the ef fects of heat, ether satisfactorily answering the purpose.

In the operation of the device thnstar de scribed, the pipe 11 being open to the valve 13, and the blower being in 'operatiomas the pressure of the air is raised the temperature will be correspondingly raised. This raising of temperature of the air will expand the ether within the thermostat 1 ing movement of the valve. Thiswill in troducea spray of water or other liquid to the air passing into the blower and the air being thus saturated will be reduced in temperature as it passes into. the outlet pipe 9, and the amount of water or other liquidsupplied .to. this air will be nicely graduated according-to the degree of tern-- 1 perature.existing'in *oraround-the thermostat 1s.

It will be understood that the operation of-the= blower may be automatically regulatedin a common and well knownmannento supplyonly such air. as may be required in the device supplied withair from the blower. .It.should,- therefore, be noted that in case the operation of the blower ceases, the temfperature atthe thermostat l8- will-continue ion-some time thereafter and the valve 18 t\vill,.theretore, rein-ainopen and this supply otwatenwithin the case 5 not being carried ofi -by the'air, afterthe blower ceases its -operation,'.would become objectionable as the, caseavould be flooded.

2T0 overcome this result I provide a pres- -sure regulated valve-19 of: any suitable and- :well known torm (the-specific construction 1110b being shown .herein) embodying, av stem -20. This stem is connected with a diaphragn'r -21 located in. a: shell 22 communicating :by -a-passage23 with the interior- Of'ythQ'OuD .letpipe-Q, said shellibeingza attached .to said outlet .as by meansof legs 24 and prefer- 'ably in proximity to the case '5. =oper-ating spring 25.-is-located-in a-neck 26 extending-from the -'shell 22, one end of the spring thrusting-against theend of said meek and the other end of -the spring A valve thrusting-against the diaphragm121, :t-herethe air passing into theblower. the operation of the i blower. the temperature of theiair will be regul'atedand kept at the proper degree. Just-as soonas 'enouglrair i is supplied and the :blower stops itsloperby operating to: close the valve.

.The :operation of this'part of my improved deviceautomatically effects supply of Water, depending uponthe amount- 01" pressure-within the shell.22. WVhenthe blower is started to supply-air for thepurpose intended, as soon as tl1e -pressure.-. is

is-closed. [As soon asithetemperature rises to a certain degree the-thermostat l8 will efiect opening movement of the valve. 13fand the water willbe supplied inthis way to During ation the lowering of the pressure caused why the blower ceaisingiits pperation Will effect closing movement of the valve 19 and prevent flooding of the blower.

The supply -'of- 'm'oistu-re'--to*the air -serves anotheruseful purpose, in 'that the air supplied to the musicalinstrumentds not only kept at a desirable temperature but it is also moistened to such extent that undue dryness willnot be caused to parts of which the musical instrument is composed.

In accordance with z the. provisions of the patentastatutes. I"; have described ithe principles of operatiom ofimy invention, together withwthe. device which I now consider --to represent theobest embodiment thereof; but I desire to .-havel=itiunderstood that thedevice shown is only illustrative and cth atthe invention may be carried out byothermeans and. applied to uses. other than those. above set-out.

I claim 1. A devicemfor: efiiectingifiow of air, .including means for. supplying. astemperature changing; medium. :to-a :volume. of air acted upon by said.de.-vice,..a plurality of: lindependently:operablecvalves for regulating a single delivery of said temperature changing. medium, and- -meansr. acting. .independently each oftheother,andaactuated by-reaupon by said device, a plurality-,-of-valves .-:for regulating; a single supply i of temperature .changing:.med1um,.=means.- affected by temperature conditions in said volume .ofiair-ionoperating one of said valves, and meansafi'ected bypressnre. (ZOIlClLtlOIlS- insaid volume. of-air for :operating another of said valves. I I

Aldevi'ce forr-efiieeting the flowqo-f air including .an enclosing:v -case,-. means :for' supplying ai'temperature changing-medium to a volume of air withinsaid case, a plurality of; independently operable valves for regulating asingle delivery! of'isaid-temperature changing "medium and independently oper- 1' able regulators operatively connected with raised to the proper-extent, such pressurewill affect theidiaphragm 21- and the-latter will operate TllB'StGID .20 to. open the valve :19. ater-will not, however, enter the blower for/the reason that the valve 13 each a of said-valves. and located in iproxim- 'ity to the Olltlfita fronnsaid case,- said [regulators being: operated-shy; reason of' 'dillerent pressure and-temperature. conditionsexisting :in the air flowing throngh-- said outlet.

- 4:. A; device:toneitectingfiow- 10f, air -'including an: .inclosing' case, a; pipe connected wtowsupply aztemperature changing medium to gSZLld CitSG on itheiinletz side --the1=eof, a conduit for flQWfOfifiiP-"COllHBCtQd tosaidcase at the loutleteside thereof, a iplurality-of. in-

dependently operable :valvesnlocatedain' said pipe, and controllers locatedi in said :conduit and-eachconnected with one of said valves, said controllers being actuated by different son of. different. conditionsexisting. 'in-asaidpressure and temperature conditions as to the air flowing through said conduit.

5. A device for efiecting flow of air ineluding an inclosing case, a pipe connected with said case to conduct a temperature changing medium thereto on one side there of, a conduit connected to said case to conduct flow of air to the opposite side there-' of, a plurality of valves located in said pipe, a pressure operated controller located in said conduit and operatively connected with one of said valves, and an independently operable temperature atlected controller located in said conduit and operatively connected with the other of said valves.

6. A device for eli'ecting the How of air including an enclosing case, means for supoperated by the flow of air passing from.

the case to permit the flow of cooling medium to the other valve, and the other valve being temperature controlled in its operation to discharge the cooling medium into the case.

8. A device for effecting the flow of air including an inclosing case, means for supplying a cooling medium to a volume of air created by said device, including a supply pipe entering the case, a pair of independently operable normally closed valves in the pipe, one of the valves being automatically operated by air pressure upon starting and stopping the device to permit the flow of cooling medium to the other valve, and the other valve being temperature controlled in its operation to discharge the cooling medium into the case.

IRA H. SPENCER. 

